Pith Number

pith:FDYBEWXP

pith:2009:FDYBEWXPM5Y6ASE6ZL4SDLXY2S

not attested not anchored not stored refs pending

The Extreme Microlensing Event OGLE-2007-BLG-224: Terrestrial Parallax Observation of a Thick-Disk Brown Dwarf

A. Gould (Ohio State), A. Udalski (Warsaw Univ. Obs.), B. Monard (Bronberg Obs.), D.P. Bennett (Notre Dame), K. Horne (St. Andrews), K. Sahu (STScI), MicroFUN, MOA, N.Miyake (Nagoya), PLANET collaborations (73 authors), RoboNet, Subo Dong (Ohio State), the OGLE

arxiv:0904.0249 v2 · 2009-04-01 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FDYBEWXPM5Y6ASE6ZL4SDLXY2S}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:29:15.443712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28f0125aef6771e0489ecaf921aef8d48f767e6e7c51bfbcaf531a3a1355352d

Aliases

arxiv: 0904.0249 · arxiv_version: 0904.0249v2 · doi: 10.48550/arxiv.0904.0249 · pith_short_12: FDYBEWXPM5Y6 · pith_short_16: FDYBEWXPM5Y6ASE6 · pith_short_8: FDYBEWXP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FDYBEWXPM5Y6ASE6ZL4SDLXY2S \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 28f0125aef6771e0489ecaf921aef8d48f767e6e7c51bfbcaf531a3a1355352d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a530ba1b58c2b9b17e3c3fd7e0ad747d2b8e378da8edabd9a8f53f5bd9a5bd68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-01T20:00:03Z",
    "title_canon_sha256": "b882999356a6b070e91cbff27aa0b806ebaa616bcac8d65d6cdb229492e74a8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0249",
    "kind": "arxiv",
    "version": 2
  }
}